BoostAddict is seeing more and more posts about chemical direct injection fuel system cleaning solutions. Color this website skeptical but over the years some pretty bad carbon build up (namely in Audi 4.2 FSI and BMW N54 motors) was posted and it took a direct physical solution to clean off the carbon deposits.

BG Products is known for various automotive cleaning chemicals and they state they have a two part gasoline direct injection cleaning solution.

Direct injection engine deposits create a unique problem. Because the deposits form on the injector tip, the spray pattern becomes deformed. This causes fuel to ignite prematurely, producing a pinging and knocking. Left unchecked, these deposits begin to form on intake valves as well, dealing a serious blow to fuel economy and vehicle performance.

Is this really a replacement for good old fashioned walnut blasting? It certainly sounds easier to just pour in some cleaner but it is hard to believe it would work better or even anywhere near as good as physical removal.

The company posts some amazing before/after photos of their products at work:

They also certainly have a nice selection of cleaning products.

BoostAddict would like to see proof their product works for direct injection fuel systems.

This carbon is so hard to clean up, car care specialists are resorting to engine teardown and media blasting. Imagine a pressure washer blasting an ammunition of plastic or glass beads, aluminum oxide, or ground-up walnut shells.⠀
......⠀
What. A. Mess. ⠀
......⠀
The new BG Platinum™ Fuel System Service cleans gasoline direct injection systems so well, there’s no need for media blasting. ⠀
⠀
You can save those walnuts for your Thanksgiving dinner.⠀

Why? The directions state to remove the manifold, cost the valves on one of the runners, put the solution in, wait and scrub then vacuum. I did something similar with seafoam and it worked. This does not enter through the fuel system.

Why? The directions state to remove the manifold, cost the valves on one of the runners, put the solution in, wait and scrub then vacuum. I did something similar with seafoam and it worked. This does not enter through the fuel system.

This link from BG itself just says to attach the applicator to a vacuum source with the engine running and burn it off like Seafoam. This is garbage and will not work just like Seafoam didn't do $#@! to N54 DI buildup.

If you have to take the manifold off and close the valve manually like in your link then why not just go do a full Media Blasting it is waaaay easier and cheaper than this expensive chemical that will possibly get in your oil and $#@! up your engine.

This link from BG itself just says to attach the applicator to a vacuum source with the engine running and burn it off like Seafoam. This is garbage and will not work just like Seafoam didn't do $#@! to N54 DI buildup.

If you have to take the manifold off and close the valve manually like in your link then why not just go do a full Media Blasting it is waaaay easier and cheaper than this expensive chemical that will possibly get in your oil and $#@! up your engine.

Where are you reading that it should be running? In the link i posted it says get it up to operating temp. Then remove the intake manifold, shutting the engine off is implied considering they tell you to close the valves for each port. The link i posted is from BG hence the copyright at the bottom of the page. I wouldnt say carbon blasting is cheaper considering some people may have to buy a decent air compressor, media blaster and media. On top of that you ideally want some sort of solvent and scrubber for a perfect cleaning.

I've used sea foam with some brushes and it was fine but to be honest my gun cleaning kit and hoppes #9 did the trick and was like $30 but takes some patience and time.

Where are you reading that it should be running? In the link i posted it says get it up to operating temp. Then remove the intake manifold, shutting the engine off is implied considering they tell you to close the valves for each port. The link i posted is from BG hence the copyright at the bottom of the page. I wouldnt say carbon blasting is cheaper considering some people may have to buy a decent air compressor, media blaster and media. On top of that you ideally want some sort of solvent and scrubber for a perfect cleaning.

I've used sea foam with some brushes and it was fine but to be honest my gun cleaning kit and hoppes #9 did the trick and was like $30 but takes some patience and time.

You clearly didn't click the link in my reply. It has instructions for this product in all different makes and models and all of them say to keep the engine running.

Try using google
"Therefore one gallon of gasoline produces about 217.5 moles of water. Each mole of water has a weight of 18 grams. So the burning of one gallon of gasoline produces 3,914.6 grams of water. This is equal to 8.6 pounds of water, which has a volume of 1.033 gallons."

1 gallon of gasoline apparently creates 8.6 pounds of water, about a gallon of water.

Even using the largest water injection nozzle for 1500hp application, it doesn't inject that much water.

nice try though.

Next, Oxygen sensor narrowband units are all identical. That means the $3 1-wire sensors will work in place of any narrowband for any car in the world. There are universal 3 and 4 wire sensors for $4-$12 available. You can literally walk into any auto store and start price checking their narrowband sensors, find the cheapest unit and wire it on.

I am sorry if you paid alot for narrowband sensors but the truth is, any sensor would work from any car ever made pretty much.

a single cm10 flows flow around 10 gallons of water at 100 psi, at 150 psi is 12.2 at 200psi is 14 and at 300psi its around 15 to 16 gallons per hour

Since most run a 300psi or bigger pump that's on the conservative side is around 15 gallons of water per hr.

Running pure distilled water and how humid the air is will easily double the water output what gasoline alone will produce per gallon out of the exhaust that's with a single nozzle that's why they only recommend running at the most 20% water to 80% meth with our cars it's not to excessively introduce water in the exhaust and near the sensor.

Most people run at least 2 nozzles exceeding the size of one cm10.

You do the calculations.

Bosch has written about this in a number of articles where water will damage and prematurely shorten the life of o2 sensors just search their articles you will find it.

Any extra water that's introduced into the reaction goes outside the parameters what the o2 was designed
to tolerate and will reduce the life of the o2, by how much really depends on the quality of the sensor and the amount of water the sensor is exposed to.